CUED Publications database

Microstructural modelling in friction stir welding of 2000 series aluminium alloys

Shercliff, HR and Russell, MJ and Taylor, A and Dickerson, TL (2005) Microstructural modelling in friction stir welding of 2000 series aluminium alloys. Mecanique et Industries, 6. pp. 25-35. ISSN 1296-2139

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Abstract

Simple process models are applied to predict microstructural changes due to the thermal cycle imposed in friction stir welding. A softening model developed for heat-treatable aluminium alloys of the 6000 series is applied to the aerospace alloy 2014 in the peak-aged (T6) condition. It is found that the model is not readily applicable to alloy 2024 in the naturally aged (T3) temper, but the softening behaviour can still be described semi-empirically. Both analytical and numerical (finite element) thermal models are used to predict the thermal histories in trial welds. These are coupled to the microstructural model to investigate: (a) the hardness profile across the welded plate; (b) alloy softening ahead of the approaching welding tool. By incorporating the softening model applied to 6082-T6 alloy, the hardness profile of friction stir welds in dissimilar alloys is also predicted. © AFM, EDP Sciences 2005.

Item Type: Article
Uncontrolled Keywords: Aluminium alloys Friction stir welding (FSW) Modelling
Subjects: UNSPECIFIED
Divisions: Div C > Engineering Design
Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:40
Last Modified: 08 Dec 2014 02:25
DOI: 10.1051/meca:2005004